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Evaluate cos 315º without using a calculator. a Plz help

Evaluate cos 315º without using a calculator. a Plz help
203k views
4 votes
Evaluate cos 315º without using a calculator.
a
Plz help

Evaluate cos 315º without using a calculator. a Plz help-example-1
User Mohamad Amin Moslemi
by
8.4k points

1 Answer

4 votes

Answer:

O A. -1/2

Explanation:

I hope it's help..

User Jaredhoyt
by
8.7k points
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